Steam-generator



(No Model.) 4 Sheets-Sheet 1. G; P. DINSMORE.- STEAM GENERATOR.

Patented Oct. .12, 1897.

(No Model.) I 4 Sheets-Sheet 2-. G. F. DINSMORE.

STEAM GENERATOR.

No. 591,460. Patented Oct. 12,1891

|||||||||||||||||| 1 HHHHHIHHHHMHHU G. I.- DINSMORE. STEAM GENERATOR.

4 Sheets-Sheet 3.

. (No Model.)

Patented Oct. 12,1897.

(NoiModeL) 4 Sheets-Sheet 4: G. F. DINSMORE.

STEAM GENERATOR.

N0..591,460. Patented'Oct. 12,1897.

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UNITED STATES PATE T FFICE.

STEAM-GEN ERATO R.

SPECIFICATION formingpart of Letters Patent No. 591,460, dated October 12, 1897.

I Application filed January 11', 1897. Serial No. 618,865. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE F. DINSMORE, of Boston, in the county of Suffolk and State ofMassachusetts, have invented certain new and useful Improvements in Steam Generating and Superheating Apparatus, of which the following, taken in connection with the accompanying drawings, is a specification.

This invention contemplates a steam generating or superheating apparatus, such as is hereinafter particularly set forth, whereby the waste units-of heat accruing in themanufacture of soft-coal gas may be utilized to generate or super-heat steam eitherfor power or for use in manufacture of what is'commonly known as water-gas.

The object of the invention is to provide a new and improved method or system and apparatus for generating or superheating steam which shall utilize to a maximum de-' gree What has heretofore been the waste units of heat accruing in the manufacture of softcoal gas and of such a character and arrangement of parts as to be easily applied to contrivances now commonly employed in the manufacture of soft-coal gas, and which will in no way detract-from the eflicacy of such apparatus, and which'shall also be comparatively simple in and inexpensive of construction, all as is hereinafter more fully set forth and described in the followingspecification, after which the invention or novel features of the device are particularly pointed out and clearly defined in the claim at the close hereof.

' Of the drawings, Figure 1 is a front view of what is known in the art as a bench of coking-retorts. Fig. 2 is a sectional View of the same, taken on the line 2 2 of Fig. 1. Fig. dis a sectional view of the upper rear portion of a bench of retorts, showing parts of my invention not shown in Figs. 1 and 2. Fig. 4 is a sectional view of Fig. 2, taken on line 4 4 of Fig. 3.

- Referring particularly to Figs. 1 and 2 of the drawings, I have shown therein a common form of a bench of retorts, such as are in general use in the manufactur'eof bituminous or soft coal gas, the said bench comprising in its construction the front wall A, side walls B B, top 0, and rear wall D. These walls form an oven in which are arranged retorts E, in which the coal-gas is generated in the well-known manner, they being heated to a high degree of heat on their sides within the oven by means of a fire built in the firebox G. The heat and products of combustion pass from the fire'box up around the retorts and then down at each side of the oven to fiues H, arranged in the side walls of the oven, one at each side thereof, and the said side flues have a mouth I, which at the forward face or side of the wall communicates with the interior of the oven. The fines H extend rearwardly of the bench and communicate with vertical lines H, formed in the rear wall, which flues H in turn communicate with a main flue J, which in turn communicates with the chimney, a portion of which'is shown at K. (See Fig. 3.)

The foregoing construction and arrangement are of a design in which I do not claim that any invention is involved.

A great quantity of heat is carried off through the fines with the products of combustion and otherwise, which heat heretofore, so far as known to me, has been wholly wasted. My invention contemplates the utilization of these waste pnits of heat for useful purposes, and in carrying outmy invention I will now proceed to describe one form of apparatus for accomplishing the purposes of the invention.

' Within the flues H, I place av coilof pipe a, the extremities of which project forward outside the front wall of the bench or oven, and the ends of the coil communicate with aboiler or steam-drum b, which latter is preferably arranged above themain flue J and is provided with a suitable water-feed pipe I) and steam-offtake pipe 19 The end a communicates with the said steam chest or boiler at a point below the water-line, while the end a of the coil communicates with the boiler or steam-chest b at a point above the waterline. By this arrangement of the coil and its extremities a circulation is obtained down through the extremity a into the coil a,where it is heated to a very high degree and converted into steam through the action of the waste units of heat passing through the flue H. From the coil a the steam or superheated steam passes through the pipe a to the steamspace of the boiler, from which it may be taken or drawn off for various purposes.

\Vhere the coil ais used to superheat steam for use in the manufacture of water-gas, the extremity a of the coil may be arranged to communicate with a gazogene or cupola,where it may be brought into contact with the incandescent carbon or coke contained therein after a well-known manner, and the pipe a may be arranged to communicate with a suitable steam-supply source. The upright flues II are or may be fitted or provided with coils a, communicating with the steam chest or boiler b in the same manner as do the coils a in the fines II. The waste units of heat passing through the main flue J are utilized by providing pipes 0, formed in loops and placed within said flue and arranged as shown, so as that one extremity of said pipes will communicate with the steam chest or boiler b above the water-line and so as that the other extremity thereof will communicate with the steam chest or boiler below the water-line, thus insuring a circulation through the said pipes. In some instances I contemplate employing within the flue J a length of coiled pipe, one end thereof communicating with the steam chest or boiler above the waterline and the other end thereof communicating with the steam chest or boiler below the water-line.

Ordinarily in gas-making plants, for economy of space and convenience, a number of benches are arranged in a row or series, the roar walls of which also constitute the rear walls of a similar series or row of benches, and all the flues of each bench are arranged to communicate with one common main iluc, so that I contemplate in some instances constructing the boiler or steam-chest of such a length and capacity as that a number of coils a from a multiplicity of benches may communicate therewith, as shown in Fig. 3.

Having'thus explained the nature of the invention and described a way of constructing and using the same, though without attempting to set forth all of the forms in which it may be made or all of the modes of its use, it is declared that what is claimed is The combination, with an apparatus for manufacturing coal-gas, comprising a furnace, and retorts therein, the furnace having a plurality of horizontal and vertical flues and a main flue into which said fines lead, of an apparatus for generating steam comprisin g a steam and water drum arranged outside of and adjacent to the main fine and a series of pipes each leading from the water-space of the steam and water drum into one of said fines and thence to the steam-space of the steam and water drum, substantially as de scribed.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, on this 8th day of Witnesses:

ARTHUR F. RANDALL, EDMUND A. Barns. 

